Mining apparatus



Jan. 3, Q. E, 1 NEWBAKER 1,892,994

MINING APPARATUS Filed Jan. 3, 1930 2 Sheets-Sheet l Jan. 3, 1933. E, J. NEWBAKER ,892,994

MINING APPARATUS Filed Jan. 3, 1950 2 Sheets-Sheet 2 closure 2l thereof and its appurtenances previously described.

The construction of the pickhainmer is such that the mining tool 35 is not rotated between itssuccessive strokes and its position and operation is therefore determined by the miner in order to produce the results which he desires.

Having thus described the apparatus I will now briefly explain its operation :hnlthough I have shown my mining tool in coi.- nection with what is known as a pickhannner, other forms of apparatus capable of producing a powerful reciprocating action may also be used, but I will ccntinne the use of the word pickhammer for the sake of simplicity of description.

The apparatus being in position illustrated in Figs. l and 2 and adjacent to the face of the coal the cross handles of the pickhammer are grasped by the operator and he begins by placing the apparatus in position, and then admits air to the pickhammer thus reciprocating the tool 35 several hundred strokes per minute and he so manipulates as to cut the sump or triangular shaped opeifiinp;l illustrated in Fig. 2 in the face of the coal. He then continues the punching and shearing of JVhe coal until he has travers-ed the length of the out intended and while this is continuing an attendant or helper shovels away the cut coal so that the miner can see and better direct his work.

As this is being done the apparatus is so operated that the inclined point of the tool 36 penetrates into the massive coal in place and also shears off portions sidewise due to the penetrating action of the point and the powerful lateral component of the pressure thereby produced on the side of the inclined point portion, thus forcing the fragments sidewise into the openings.

The first part of' the cut is preferably made with a shorter tool and a second cut is thereafter made with a longer tool and after these cuts are made the coal is blasted or otherwise forced down into the opening or cut, in the usual manner, after which it is loaded in mine cars, transported to the coal tipple and dumped, whereupon the working face of the coal seam is ready for a repetition of this operation.

Although the cut in the coal seam is illustrated at the bottom thereof, my apparatus will cut it at the top, the sides or elsewhere as will be readily understood.

I have made and used many forms of tools as hereinbefore stated but now prefer to use the style illustrated, as the combined penetrating and lateral shearing effect of the inclined point portion produces excellent results.

The lateral shearing action is due to the inclination of the point portion of the tool which portion also has sufficient side bearing surface so that it does not crush the coal on the side supported by the main body of the seam so that the weaker and unsupported side must yield and be broken from the mass into the opening, with results of efficiently producing the cut desired.

Although I have described and illustrated my invention in considerable detail I do not wish to be limited to the exact specific details thereof as shown and described, but may use such modifications in, substitutions for, or equivalents thereof, as are embraced within the scope of my invention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a mining apparatus, the combination with an axle and a pair of wheels turnable thereon, of a pickhammer supporting socket carried by the axle and comprising a lower curved half socket and an upper curved half socket hinged on the lower curved half socket, a pickhammer supported in the socket, a flange on the pickhammer in rear of the socket, a split-collar on the forward end of the pickhammer in front of the socket, and means to secure the split-collar in position.

2. In a mining apparatus, the combination with an axle and a pair of wheels turnable thereon, of a pickhammer supporting socket comprising a lower semi-tubular member carried by the axle and a semi-tubular member hinged on the lower member, the upper member having a front end projecting beyond the lower member and having a forwardly extending notch in its rear end.

In witness whereof I hereunto affix my sign ature.

EDVARD J. NEWBAKER.

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